For the first time, the International Olympiads in Informatics in Teams (with the official participation of Italy, Romania and Russia) will be mirrored into online contests. These contests, of a lower difficulty level than those of the IOI, are intended for teams of 4 contestants from the same high school. However, everyone is welcome to participate to the mirror contests, especially if you are considering to join officially the IIOT in the future! More specifically, we allow:

several teams from the same school (also in the official contest)

teams participating only in some contests (also in the official contest)

changes in team members

teams of students from different schools

smaller teams

The mirror contests timing will be USACO-like: it will be open for 24 hours but you will be able to compete for up to 3 hours (you can decide when to "start" your time window, after the login). Participation will be available upon registration to the Italian trainings website (localized also in English): please do it in advance as it may be impossible during the contest! The problem statements will be available in English only, and the languages allowed are C, C++ and Pascal. Every contest will consist of 7 problems (see https://ioi.team for further information).

Note: you can decide when to start your 3 hour time window, but remember that the contest will end 24 hours after the start of the official contest regardless of your time window!

If the login is successful you will be ready to participate, just wait for the contest to start! (and maybe save the page in your bookmarks, so that you can quickly get back to it when the contest begins)

When the contest starts, you will see a red button. Click it when you want to start your 3 hour time window!

What do you mean through official participation of Romania? If I'm a Romanian, then I can compete officially somehow?

LE: I just opened the site: "Teams cannot have members who: are attending the 5th class in the school year 2016/2017, were awarded a medal in the Olympics National Individual during the school year 2015/2016 and who were born before July 1st 1998." It seems that regardless of the answer to my question, I'm not eligible to compete anyway

If you are eligible you can, but your school need to subscribe your team with your national organizer (see http://cni.nt.edu.ro/new/ for Romania). The official contests are held independently in each participating country (we just provide an unofficial mirror contest for non-participating countries or non-eligible teams).

The rules on teams have been slightly updated this year (and I fear this update is not reflected on the website): 1 out of 4 member is allowed to participate (provided that is IOI-eligible), while 3 out of 4 member have the further restriction (IOI-n+1-eligible and not national medalist).

I know I already missed a round, but is there any way to sign up now (and be considered to have gotten 0 points in the missed round)? When I first read your answer, for some strange reason, I didn't see that this time you can have one national medalist in the team so I thought that I can't compete and now it seems I can but I can't find a registration place. Is it already too late?

I am sorry but I am only responsible for the selection in Italy and for the unofficial contest: so the only thing I can say is that you definitely can participate in the unofficial contest. For the official one, you need to ask to the Romanian organizers!

I add a couple of clarification that I have got asked several times now :)

1) Our platform does not currently support true "team registration", so you need to register as an individual (maybe choosing a username reflecting the team name).

2) Multiple persons can connect to our platform with the same account.

3) The format for the official contest is 4 students from the same high school. However, for the unofficial contest there are NO restrictions (even though it is still suggested to met these criteria). It means that you can have more/less than 4 students, possibly coming from different schools.

4) In the unofficial contest, teams can change at every round (but it is suggested you do not).

5) Multiple teams are allowed from the same school, even in the official contest.

Furthermore, during each official contest the training website will be down for security reasons, thus making impossible to register new accounts. If you plan to do the open contest in an overlapping time window with the official one, please register an account in advance!

Hi! Yes, ranking and problems will be available: I hope to find my technical colleague very soon (which is now kind of disappeared) and everything will be ready. I'll write you here again as soon as everything is ready.

Just today we happened to be running out of disk space in our server, so there might be some malfunctioning in the next few days until we sort it out, sorry about that.Probably it is just that, and should be fixed soon.